Use these options to specify how the date range returns results. "Exact" means that the start and end dates of descriptions returned must fall entirely within the date range entered. "Overlapping" means that any description whose start or end dates touch or overlap the target date range will be returned.

European Commission Contribution Agreement with UN Agencies - Agreement Number - ECHO/DIP/BUD/2011/91010 [Strengthening national and regional systems of tsunami early warning and preparedness, Ecuador, Colombia, Chile and Peru]